In this colorful and entertaining spotter's guide, John Northrup identifies and captions more than 3,000 current styles of license plate from every state and province of the United States, Canada, and Mexico. Here you can find out which state hasn't required motorists to change plates since 1942; the maximum number of characters available for vanity plates in a particular state; which state could theoretically have 100 motorists with the same plate number at the same time; and where in North America the plates are cut in the shape of a polar bear.